DE10000859A1 - Automatic process for reshaping a thin side wall of a component involves measuring deviations between actual and set geometries and using to locally heating areas to be reshaped under pressure - Google Patents

Abstract

The actual geometry of the thin side wall(2) is recorded in an electronic data model and compared with a set geometry stored in a data model. Local deformation areas(6) in which deviations between the set and actual geometry exceed set limits are determined and an energy profile is calculated for reshaping each deformed area. Internal pressure is applied to the component and energy directed at the local deformations according to the calculated figure to effect geometry changes. An independent claim is made for the process equipment which includes: a) a recording unit(4) for determining the actual geometry of the sidewall in an electronic data model; b) a computer for: i) storing the set geometry in an electronic data model; ii) for calculating deviations between set and actual geometry; iii) for determining local areas in which deviation limits have been exceeded and iv) for calculating an energy profile to be directed at the areas(6) to be reshaped; c) an internal pressurizing unit(26) and d) an energy source(11) for directing at the areas to be reshaped.

Description

The invention relates to an automated method for cutting loose forming of a thin-walled side wall of a body and an apparatus for performing the method.

A process for non-cutting forming of thin-walled pages Wall of a body is known from JP 08001760 A. In which body to be formed is a hollow body that except for an opening arranged at the end det. The hollow body is with its opening End attached in a fastener. The whole Hollow body is heated until it is highly malleable owns. In this state of the hollow body, a fluid is passed through the opening is blown into the hollow body. That of opening opposite end of the hollow body is by means of a pull rod and  a push rod until the hollow body is the desired one Has final shape. The distribution of energy can only be rough can be controlled, which leads to the production of fine and precise contours not enough. The exact manufacture of a location-dependent defined wall thickness of the body produced is not possible.

Another process for chipless forming a thin-walled The side wall of a body is a blow molding without a counter shape known. The body to be deformed is placed in a stenter clamped and heated evenly. Within the stenter an overpressure is generated so that the entire thin-walled Body is arched outwards. The resulting contour, e.g. B. a dome always has the same shape. The distribution of the Energy can only be roughly controlled, resulting in manufacturing fine and exact contours are not sufficient. The exact manufacturer a locally defined wall thickness of the generated Body is not possible.

Another process for chipless forming a thin-walled The side wall of a body is known as glass blowing. At The hollow body is made of glass using this manual method a flame in large areas of its surface so strong heated until the desired formability is achieved. On it the glassblower acts on the inside of the hollow body Air pressure by blowing into the hollow body. The reach The accuracy of the forming is very much dependent on the skill of the Glassblower dependent. Deviations from the target geometry of the body pers are not measured exactly, but only roughly estimated. In particular, the preparation of precise 3D free-form surfaces prepares enormous difficulties. The measurable verification of the result can not. As a result, no exact Corrections are made. Another disadvantage with the Handwork is given by the fact that the exact manufacture of a not defined depending on the location of the wall thickness of the body produced is possible. The material thickness of the blown hollow body leaves not depending on the surface coordinate control, but must be accepted as they are in the  Forming process results. Areas that are the largest in forming Experienced elongation, after completion of the forming process on thinnest. Therefore, a starting body at the beginning of the Forming have so much material at every point that the finished body at its weakest point is still durable is enough to withstand the necessary loads. As a result, there is more material in many parts of the body than necessary available. This results in a relatively large mass of the body. Even less than the accuracy of the shape of the body When it comes to manual work, pers is the quality of the surface obtained detectable. Ripple and other surface imperfections that have arisen due to manual processing do not balance again. Furthermore, there is a handicraft deliberately structured change in the formability of the mate rials of the body cannot be reached. The distribution of heat can only be roughly controlled, which leads to errors in the forming leads.

Furthermore, automated blowing processes are non-cutting Forming a thin-walled side wall of a body is known. The blowing machine used for this must be used to generate a certain geometry of the body can be set up specifically. The procedures are only for glass and thermoplastic Suitable for plastics. The exact manufacture of a location-dependent defined wall thickness of the body produced is not possible.

The invention is based, a method and a task Device for chipless forming of a thin-walled side wall of a body with which a flexible, economical, automated production of bodies in Small series is possible.

According to the invention, this is the case with the method by the features of claim 1 and in the device by the features of claim 11 achieved.

In the automated process for non-cutting forming a  thin-walled side wall of a body, the target Geometry of the thin-walled side wall of the body in one given electronic data model. The actual geometry of the the thin-walled side wall of the body to be formed becomes flat if recorded automatically and in an electronic data model filed. The target-actual deviation is from the comparison the recorded actual geometry with the specified target geometry the thin-walled side wall of the body is calculated, and local Forming areas in which the target-actual deviation is one exceeds the specified limit, are determined. A place depending on the energy profile to be included in the local Forming areas calculated using numerical methods. A Side of the thin-walled side wall of the body is defi pressurized pressure. The formability of the thin-walled Sidewall of the body is defined in a more automated way Way in the local transformation areas by defined Energy supply in the local transformation areas according to the calculated location-dependent energy profile increased, the thin-walled side wall of the body in the local deformation areas due to their defined increased formability and the one-sided pressurization is formed.

The starting point of the automated process is the existence of an electronic data model of the body. For example it can be CAD or image data of the finished endpro act products. The desired target geometry of the body is achieved by gradually reshaping the original body by the formability of the thin-walled side wall of the body in defined one or more local deformation areas becomes. With a local forming area in which the formable increased, it is a small sub-area, in which the calculated location-dependent temperature profile is entered was brought. Several local forming areas can also be used together form a global transformation area, the one has inhomogeneous temperature profile. The local Umfor Areas in turn themselves can have an inhomogeneous temperature have profile. With the thin-walled side wall it can  around an outer wall or an inner wall of the Act body. Due to the pressure difference between the through the pressurized side of the side wall of the Body and others affected by ambient pressure Side of the side wall of the body is the thin-walled side wall of the body with sufficient formability or reshaped elastic-plastic deformability. It will be local Forming areas calculated in which the target-actual deviation exceeds a predetermined limit. Within this Forming areas, the energy profile to be applied as well the required pressure difference is calculated. These state parameters can by solving the appropriate continuum mechanical Differential equations determined using numerical methods become. Other calculation methods, such as fuzzy logic, neural Networks and Like., Are also applicable and the expert well known.

When a body is reshaped, there is an edge that Areas that already have the desired geometry from Separates areas that still need to be reshaped. Now you can respective area to be reshaped both only partial areas edited, or the entire area to be reshaped Energy are supplied. The temperature to be introduced Profile can be constant in the area if this is very is small. As a rule, however, it is an inhomo Genes temperature profile in the respective area to be reshaped. You can do this using the example of one to be manufactured Imagine a doll's head made from an egg-shaped blank is manufactured. Assume that the blank has in the area of Already at the back of the head the desired geometry, the face must but still to be edited. The edge course is in this case clear. However, it may be that e.g. B. the cheeks already have the desired geometry, eyes, mouth, nose and chin but still need to be reshaped. Then the face forms that global transformation area, and the games called eyes, Mouth, nose, chin are the local deformation areas. To the You have to express your nose in this local form  an inhomogeneous temperature profile. Corresponds to the If the overall geometry is not yet the target geometry, it must the face of the doll's head as a whole can still be worked on with an inhomogeneous temperature profile.

The body can be reshaped without using a mold. This is particularly useful for small series or single products. The absence of a form has the big one Advantage that the set-up times are minimized and no additional costs for mold making.

The side of the thin-walled side wall of the body can with Compressed air of defined pressure or with a hydraulic medium, preferably hydraulic oil. The hydraulic Pressurization has the advantage that heating the Body through the hydraulic medium to a basic temperature can be performed and the reshaping area of the body cools down faster. The one on the thin-walled sides pressure applied to the body can be constant. This has the advantage that only the selection as a parameter the forming area and the duration of exposure or intensity the energy supply remain unchanged while the pressure remains. For example, it is advisable to use the same materia lien to use an equally high pressure. It is also possible with different body materials depending on the shape availability of the respective material to different pressures use. For the processing of metals there is one higher pressure than is the case with plastics. As well it is feasible to use the pressure as a further parameter during to vary the forming process.

The actual geometry of the thin-walled side wall of the body can be recorded continuously and depending on it the energy be controlled. It will open up at intervals bringing energy profile that defines the Formability of the thin-walled side wall of the body in the local deformation area increased. This makes it possible  high accuracy in forming the thin-walled sidewall reach the body. So first of all in machining local forming area a lower energy quantity applied as calculated and the resulting Deformation can be recorded and measured. In dependence of the now determined actual geometry becomes the required one Increases the formability of the body. This process is repeated until the target-actual deviation the pre given limit no longer exceeds. It is also possible to transform the body in one step, if the parameters required for this are sufficiently known are. Especially with bodies that do not have extremely high machining accuracy, it is advisable to use only one or a few forming steps in a local forming area to take.

The location-dependent energy profile can be used by everyone New forming step in the local forming areas calculated and applied accordingly to the body. This results in a particularly precise achievement of the desired transformation of the body.

The wall thickness of the side wall of the body can be targeted Selection of the local deformation area can be varied. This means u. a. that the wall thickness of the body is not necessary is usually constant over the entire surface of the body. So one and the same outer geometry of the body can be verified by Ver achieved different local forming areas be, the wall thickness of the side wall of a body is then designed differently than the wall thickness of the other Body. A variation in the wall thickness of the side wall of the Body is particularly useful when used for structural Reinforcement of the body or component in certain areas Chen increased wall thickness is required. For this then but not the entire body has this wall thickness. This results in an advantageous reduction in mass or the weight of the body.  

The energy can be calculated according to the location-dependent energy Profile defined by a laser beam. On Laser beam is particularly easy to control, so that the surface the thin-walled side wall of the body in the desired Forming area is scanned. The laser beam has here for the desired accuracy and exact dosage intensity of energy supply. Because of the very Local energy input can be very narrow with the laser beam Energy profiles and thus very fine contours are generated. In principle, however, it is also possible for the energy supply to use another energy source. For example, a Radiant heaters can be used.

The formability of the thin-walled side wall of the body can by varying the duration of exposure, intensity, pulse width or focus size of the laser beam can be varied. Important is ultimately that formability in a defined manner is influenced so that it is as accurate as possible predictable Forming results in the forming area of the body.

The local deformation areas can be reached after the desired deformation of the thin-walled side wall of the body be cooled. The necessary processing time for the Umfor body's body is reduced.

The new process can also be called FDS (Flexible Direct Shaping). The process offers a variety of advantages: all bodies can be shaped with great accuracy, defined wall thickness and high quality. These quantities can be measured and controlled with high accuracy. The Manufacturing process is greatly accelerated because it is functional Products are available immediately. Every body can immediately and can be produced without major preparations if an electro nical data model is available. It will be an enormous cost savings achieved, especially in the production of individual Products, one-offs and small and medium-sized items series, since no elaborate forms have to be made.  

An enormous time saving is achieved, because the more complicated the body to be manufactured, for example a prosthesis, the faster the process compared to known ones Manufacturing process. The manufacturing times are almost independent on the size of the body. The processing time of a body or workpiece mainly depends on how similar the Initial shape of the blank already the body to be produced is. The FDS process is basically for all formable Suitable materials. Bodies made up of different formable materials are assembled, processed. Any initial forms can be processed, whereby prefabricated shaped surfaces and other workpieces (ribs etc.) can remain unchanged. Only such areas in which do not yet match the target geometry and the actual geometry must be reshaped. The integration of others Standard components are also possible. Particularly complicated angled molded parts, e.g. B. undercuts can be made in one piece. Most are not the following Processing steps (joining of half shells etc.) required. Already manufactured bodies can be changed quickly. On Existing and already used bodies can also be reshaped become like any blank. Old bodies can again used, standard blanks can quickly be customized Desires to be adjusted and changed. Due to the fact, there is no Ver that the process works without contact wear of tools. The use of lubricants or the like not necessary. The advantages of the FDS procedure lie especially in the field of small and medium series production as well the production of individual products. With the procedure the production of individual products is not essential more complex than that of comparable standard products. Instead of using different molds, it is enough the existence of a data model in order to use the FDS Process to produce a product directly. The pure ferti delivery time for an individual product, depending on the scope of the to be carried out takes only a few seconds to a few minutes. This reduces manufacturing costs  and comparable to those of known methods.

The device for chipless forming a thin-walled Sidewall of a body has geometry detection unit for automated detection of the actual geometry of thin walled side wall of the body. An electronic one Calculator for specifying the target geometry of the thin-walled sides wall of the body in an electronic data model to Calculate the target-actual deviation from the comparison of the recorded Actual geometry with the specified target geometry of the thin wall side wall of the body, to determine local Umfor areas in which the target / actual deviation is a predetermined exceeds the limit, and to calculate a location-dependent energy profile to be introduced in the local forming area is sufficient. An adjustable pressure device is used to act on one side of the thin-walled side wall of the Body with defined pressure. A device is used for defined automated increase in formability of thin walled side wall of the body in the local reshaping areas through defined energy supply in the local area ranges depending on the calculated target / actual Deviation, the thin-walled side wall of the body in the local deformation areas based on their defined increased formability and one-sided loading the pressure is transformed. The geometry registration unit for automated detection of the actual geometry of the thin-walled Sidewall of the body in an electronic data model serves the existing geometry of the body or workpiece to determine the process steps to be carried out men. The accuracy of the contour data, the speed of data collection and completeness of the data collected is of importance.

The pressure device can be a compressed air device. It can also be a pressure working with a hydraulic medium device use.  

The actual geometry of the thin-walled side wall of the body can be captured with a 3D object measurement system. The 3D Object measurement system includes a digital camera as well corresponding control devices and the associated soft would. As an alternative to object measurement with a digital camera it is also possible to use ultrasound, radar, lidar and others Use distance sensors.

A cooling device can be used to cool the local form areas after reaching the desired deformation of the thin-walled side wall of the body can be provided. By the faster cooling of the body in the previously heated Forming area can take the necessary machining time for the Forming the body can be further reduced.

For the energy supply in a certain local transformation area of the body can be the body and / or the device for defined automated increase in formability moves become. It is important to ensure that everyone is manipulated Place the thin-walled side wall of the body for the Ener pouring supply is accessible.

The body to be formed is used to change the formability supplied energy in the current local transformation area, so that, depending on the material of the body, it reaches a temperature in which a reshaping due to the compressed air brought pressure takes place. The energy can be different Species are fed. For example, the device for defined increases in formability be a laser. The laser beam of the laser is then controlled so that the location-dependent Energy profile in the local deformation area of the Body is introduced, for example by scanning with the Laser beam or by means of a controllable micromirror system. Alternatively, a localized hot air jet can also be used become. The entire forming process can be done by a computer supported simulation can be simulated. Because of the simulation the parameters to be set, e.g. Tem  temperature, intensity of the energy source and pressure of the compressed air, determine. FEM simulation programs can be used for this that allow the body to expand to calculate with great accuracy. Other methods too, like e.g. B. fuzzy logic, neural networks, etc. can be used. All required material parameters, such as. B. modulus of elasticity, temperature etc., can vary arbitrarily across the surface of the body become.

Using an IR camera or other thermography can move the existing temperature profile of the material in the Forming area of the body detected and depending on it the required energy profile to be applied can be determined.

To control the relative movement between workpiece and work Robots and movement units are suitable. If it is in the body around a relatively flat molded body with only one moderate accuracy to be achieved, it may be sufficient a biaxial device for moving the energy supply to use. With elongated hollow bodies, the FDS system shows also two axes for positioning the energy supply and additionally an axis of rotation for the rotation of the body. For example, when using a laser for energy the laser beam is fed by means of a rapidly rotating mirror to the desired location on the surface of the Body are steered. Ultimately, it is important that calculated energy profile with the required accuracy is applied.

In addition to pure forming, there is also integration different, already known methods possible. Examples for this are the cutting out of certain areas Completion of the forming, welding of the formed Body with other molded parts, the annealing of the material to Healing the surface of the body, melting the mate rials to the wall thickness of the generated material flow To change the side wall (melt flow) and that  Sintering for the targeted application of material in certain Areas of the body.

The invention is described below using exemplary embodiments further explained and described.

Fig. 1 shows a first embodiment of an automated apparatus for forming a body from the beginning of the forming process.

FIG. 2 shows the device according to FIG. 1 after shaping of a shaping area of the body.

FIG. 3 shows the device according to FIG. 1 when using a partial mold.

FIG. 4 shows the device according to FIG. 1 with a body having a preformed molded part.

FIG. 5 shows the device according to FIG. 4 with the deformed body.

Fig. 6 shows a second embodiment of the device with a plate-shaped body before it is formed.

FIG. 7 shows the device according to FIG. 6 with the deformed plate-shaped body.

Fig. 8 shows the forming of a thin side wall of the body with a defined wall thickness.

FIG. 9 shows a third embodiment of the device with a body with a double chamber before it is deformed.

FIG. 10 shows the device according to FIG. 9 with the deformed body.

Fig. 1 shows a first embodiment of a device 1 for automated chipless forming a thin-walled side wall 2 of a body 3rd The body 3 is made of plastic. However, the body 3 could also consist of metal, glass, a composite material or some other formable material. The device 1 has a geometry detection unit 4 for automated detection of the actual geometry of the thin-walled side wall 2 of the body 3 in an electronic data model. An electronic computer 5 is used to specify the target geometry of the thin-walled side wall 2 of the body 3 in an electronic data model, to calculate the target-actual deviation from the comparison of the detected actual geometry and the predetermined target geometry of the thin-walled side wall 2 of the body 3 , for determining local forming areas 6 ( FIG. 2) in which the target-actual deviation exceeds a predetermined limit value and for calculating an energy profile to be introduced in the local forming areas 6 depending on the location. Furthermore, the device 1 has a clamping device 7 for clamping the body 3 . The clamping device 7 has a base plate 8 and a closure 9 . About the clamping device 7 , the interior of the body 3 , here in the form of a hollow body, is connected to a controllable Druckvor direction 26 in the form of a compressed air device 10 . The controllable compressed air device 10 serves to pressurize the interior of the body 3 and the side wall 2 to be formed with compressed air. However, a pressure device 26 working with a hydraulic medium could also be used instead. Finally, the device 1 has a device 11 for the defined automated increase in the formability of the thin-walled side wall 2 of the body 3 in the local forming area 6 by means of a defined energy supply in the local forming area 6 in accordance with the calculated location-dependent energy profile. The device 11 is designed as a laser 12 .

Fig. 1 shows the device 1 at the beginning of the forming process of the body 3. First, the target geometry of the body 3 is specified in an electronic data model. The target geometry can be generated from existing CAD data of the body 3 or can also be determined, for example, by measuring a model of the finished body 3 . The target geometry is stored in the electronic computer 5 . The blank or the body 3 to be machined is then clamped in the clamping device 7 and its actual geometry is measured by means of the geometry detection unit 4 . The geometry detection unit 4 is a 3D object measurement system 13 , which records the geometry data of the body 3 , as is symbolically represented by means of the rays 14 . The object measurement system 13 is connected to the electronic computer 5 for transmitting the determined actual data of the body 3 . The computer 5 compares the data of the determined actual geometry with the data of the predefined target geometry of the finished body 3 , and the target / actual deviation is calculated. On the basis of these target-actual deviations, the local forming regions 6 are determined, in which the target-actual deviation exceeds a predetermined limit value. If the determined target / actual deviation does not exceed this limit value, no deformation of the thin-walled side wall 2 of the body 3 is necessary. The electronic computer 5 calculates a location-dependent energy profile to be introduced in the local forming areas 6 using numerical methods. According to the calculated location-dependent energy profile, the deformability of the thin-walled side wall 2 of the body 3 in the local deformation regions 6 is increased in a defined manner by a defined supply of energy in the local deformation regions 6 . For the reshaping of the local reshaping area 6 , a laser beam 15 according to arrow 16 is moved along the surface of the body 3 to be machined by means of the laser 12 in such a way that the energy required for increasing the reshapability of the thin-walled side wall 2 of the body 3 corresponds to the corresponding reshaping area 6 is fed. The amount of energy or the degree of deformability of the body 3 is varied by varying the exposure time, intensity, pulse width or focus size of the laser beam 15 . Due to the pressure applied to the side wall 2 to be formed of the body 3 by means of the compressed air device 10 , the desired deformation of the body 3 then results exclusively in the current local deformation region 6 in the direction of the lower pressure.

The result of the reshaping in the local reshaping area 6 is shown in FIG. 2. It can be seen that the thin-walled side wall 2 of the body 3 was reshaped only in the reshaping area 6 of the body 3 , in which a corresponding amount of energy was supplied by the laser 12 to increase the reshapability of the body 3 . The other areas of the body 3 remained unchanged, but can be reshaped in further processing steps.

In Fig. 3, the additional addition of a part-mold 17 is shown. After the formability of the thin-walled side wall 2 of the body 3 has been increased by means of the laser beam 12 , the partial mold 17 is brought into contact with the forming area 6 of the body 3 . Then the outward pressure provided by the compressed air device 10 is applied to the inner wall 2 of the body 3 in such a way that the extension 18 of the partial shape 17 produces the desired geometry in this area of the body 3 .

Fig. 4 shows a somewhat different embodiment of the device 1. The body 3 has a preformed molded part 19 which is already part of the starting blank.

FIG. 5 shows the body 3 according to FIG. 4 after the shaping in the shaping area 6 .

Fig. 6 shows a further embodiment of the device 1. The body 3 is not designed as a hollow body, but in a flat plate shape. To apply the necessary pressure, the plate-shaped body 3 is clamped in a clamping device 20 with a pressure chamber 21 . The clamping device 20 has a base body 22 and a closure 23 .

In this embodiment, too, there is a relative movement between the laser beam 15 and the base body 3 according to arrows 24 , so that the laser beam 15 can basically reach almost all areas of the body 3 .

FIG. 7 shows the body 3 according to FIG. 6 after the shaping has taken place in the shaping area 6 .

Fig. 8 shows two identically trained body 3 before the Umfor formation and two possible different finished body 3rd Here it is clear that by appropriate selection of the Umfor processing areas 6 one and the same outer geometry of the body 3 can be achieved with different wall thickness. The arrow 25 shows the direction in which the material of the body 3 has flowed.

FIGS. 9 and 10 show a third embodiment of the device 1 with a body 3 with a double chamber. The device 1 has two separate clamping devices 7 and separate compressed air devices 10 , each of which is connected to the chambers of the body 3 . The two chambers of the body are separated by the thin-walled wall 2 of the body in the form of an inner wall. The pressure within the two chambers of the body 3 is greater than the ambient pressure. Due to the pressure conditions, the thin-walled inner wall 2 of the body 3 is stretched after the introduction of energy.

REFERENCE SIGN LIST

1

- Contraption

2nd

- side wall

3rd

- Body

4th

- Geometry registration unit

5

- Computer

6

- forming area

7

- jig

8th

- base plate

9

- closure

10th

- compressed air device

21

- pressure chamber

22

- basic body

23

- closure

24th

- arrow

25th

- arrow

11

- Contraption

12th

- laser

13

- Object measurement system

14

- beam

15

- laser beam

16

- arrow

17th

- partial shape

18th

- process

19th

- molded part

20th

- jig

26

- printing device

Claims (15)

1. Automated process for the chipless forming of a thin-walled side wall of a body, with the steps:
Specifying the target geometry of the thin-walled side wall ( 2 ) of the body ( 3 ) in an electronic data model;
automated detection of the actual geometry of the thin-walled side wall ( 2 ) of the body ( 3 ) and storing in an electronic data model;
Calculating the target-actual deviation from the comparison of the detected actual geometry with the predetermined target geometry of the thin-walled side wall ( 2 ) of the body ( 3 );
Determining local forming areas ( 6 ) in which the target / actual deviation exceeds a predetermined limit value;
Calculating a location-dependent energy profile in the local deformation areas ( 6 ) using numerical methods;
Applying a defined pressure to one side of the thin-walled side wall ( 2 ) of the body ( 3 ); and
Defined automated increase in the formability of the thin-walled side wall ( 2 ) of the body ( 3 ) in the local forming areas ( 6 ) by defined energy supply in the local forming areas ( 6 ) according to the calculated location-dependent energy profile, the thin-walled side wall ( 2 ) of the body ( 3 ) is reshaped in the local reshaping areas ( 6 ) due to its defined increased reshapeability and the one-sided pressurization. 2. The method according to claim 1, characterized in that the body ( 3 ) is formed without using a mold. 3. The method according to claim 1 or 2, characterized in that the side of the thin-walled side wall ( 2 ) of the body ( 3 ) with compressed air defined pressure is applied. 4. The method according to claim 1 or 2, characterized in that the side of the thin-walled side wall ( 2 ) of the body ( 3 ) with hydraulic medium defined pressure is applied. 5. The method according to any one of claims 1 to 4, characterized in that the actual geometry of the thin-walled side wall ( 2 ) of the body ( 3 ) is continuously detected and the energy supply is regulated depending on it. 6. The method according to any one of claims 1 to 5, characterized in that the location-dependent energy profile to be introduced for each forming step in the local forming areas ( 6 ) is recalculated. 7. The method according to any one of claims 1 to 6, characterized in that the wall thickness of the side wall ( 2 ) of the body ( 3 ) is varied by targeted selection of the respective local deformation area ( 6 ). 8. The method according to any one of claims 1 to 7, characterized in that the energy in the local forming areas ( 6 ) according to the calculated location-dependent energy profile defined by a laser beam ( 15 ) is supplied. 9. The method according to claim 8, characterized in that the deformability of the thin-walled side wall ( 2 ) of the body ( 3 ) is varied by varying the exposure time, intensity, pulse width or focus size of the laser beam ( 15 ). 10. The method according to any one of claims 1 to 9, characterized in that the local deformation areas ( 6 ) are cooled after reaching the desired deformation of the thin-walled side wall ( 2 ) of the body ( 3 ). 11. Device for performing the method according to one of claims 1 to 7, with:
a geometry detection unit ( 4 ) for automated detection of the actual geometry of the thin-walled side wall ( 2 ) of the body ( 3 ) in an electronic data model;
an electronic computer ( 5 ) for specifying the target geometry of the thin-walled side wall ( 2 ) of the body ( 3 ) in an electronic data model, for calculating the target-actual deviation from the comparison of the detected actual geometry with the predetermined target geometry the thin-walled side wall ( 2 ) of the body ( 3 ), for determining local deformation areas ( 6 ) in which the target-actual deviation exceeds a predetermined limit value and for calculating a location-dependent energy profile to be introduced in the local deformation areas ( 6 );
an adjustable pressure device ( 26 ) for applying a defined pressure to one side of the thin-walled side wall ( 2 ) of the body ( 3 ); and
a device ( 11 ) for the defined automated increase in the formability of the thin-walled side wall ( 2 ) of the body ( 3 ) in the local forming areas ( 6 ) by defi ned energy supply in the local forming areas ( 6 ) according to the calculated location-dependent energy profile, the thin-walled side wall ( 2 ) of the body ( 3 ) is reshaped in the local reshaping areas ( 6 ) due to its defined increased reshapeability and the one-sided application of pressure. 12. The apparatus according to claim 11, characterized in that the pressure device ( 26 ) is a compressed air device ( 10 ). 13. The apparatus of claim 11 or 12, characterized in that the device ( 11 ) for the defined increase in formability is a laser ( 12 ). 14. Device according to one of claims 11 to 13, characterized in that the actual geometry of the thin-walled side wall ( 2 ) of the body ( 3 ) with a 3D object measurement system ( 13 ) is detected. 15. Device according to one of claims 11 to 14, characterized in that a cooling device for cooling the local deformation areas ( 6 ) after reaching the desired deformation of the thin-walled side wall ( 2 ) of the body ( 3 ) is provided.